SCORPION ATR Tires by Pirelli®. Season: All Season. Type: All Terrain / Off Road / Mud. The Scorpion ATR is Pirelli's On-/Off-Road All-Terrain light truck tire developed for pickup, crossover and sport utility vehicle drivers that want to combine on-road civility with off-road capability. The Scorpion ATR is designed to master long highway journeys, wet roads and the challenges of winter driving by combining paved road comfort and handling with rough terrain grip and maneuverability.